CN205791531U

CN205791531U - There is the active filter of malfunction monitoring function

Info

Publication number: CN205791531U
Application number: CN201620489236.0U
Authority: CN
Inventors: 吴忠彪
Original assignee: SHANGHAI ZHONGBIAO ELECTRIC CO Ltd
Current assignee: SHANGHAI ZHONGBIAO ELECTRIC CO Ltd
Priority date: 2016-05-26
Filing date: 2016-05-26
Publication date: 2016-12-07
Anticipated expiration: 2026-05-26

Abstract

This utility model provides a kind of active filter with malfunction monitoring function, include source filter housing, the current transformer being located at outside housing and voltage transformer, it is characterized in that: in active filter housing, be provided with signal processing circuit, fault monitor module, IGBT power conversion modules, FPGA controller, display module, protective relaying device, and output reactance device, provide the benefit that: this has the active filter of malfunction monitoring function, reasonable in design, simple in construction, it is parallel in circuit be easy to actual application, filter load harmonic current real-time and efficiently, and the malfunction monitoring function of circuit can be realized, ensure the properly functioning of circuit and active filter.

Description

There is the active filter of malfunction monitoring function

Technical field

This utility model belongs to active filter technical field, especially relates to one and has malfunction monitoring merit The active filter of energy.

Background technology

In the middle of supply of electric power, due to the existence of various load, on the one hand the operation of load can produce Various harmonic currents, can make electric current and voltage produce in various degree in harmonic current injection to electrical network Distortion, the stability of electrical network and safety are produced impact, the power circuit on the other hand run can be because of Cause the parameter of circuit to change for environment, load change and weather conditions, and then cause electric current Or voltage occurs more than electric current and the situation of voltage restriction of power circuit, need to carry out path monitoring, and Time make early warning, it is ensured that power circuit properly functioning.

In terms of harmonic carcellation, conventional wave filter has passive filter and active filter, passive filtering Device is frequently used for relatively simple system, filters for fractional harmonic, and active power filtering range of application Wider, in addition to except the occasion of passive filter application, it can apply, the highest at some system requirements, negative Lotus change is fast, can also apply in the case of environment is worse.But existing Design of Active Filter, It is merely capable of meeting the function of harmonic filtration, does not possess real-time observation circuit fault, it is achieved fault pre-alarming Function, therefore under complicated operation of power networks environment, needs to take into account this respect factor, and then really Protect the properly functioning of circuit and filter apparatus.

Accordingly, it is considered to the problems referred to above, make full use of existing supercomputing chip and singlechip technology, Realizing the dual-use function of harmonic filtration and malfunction monitoring, inventor combines experience and have developed one Plant the active filter with malfunction monitoring function.

Summary of the invention

This utility model purpose is the deficiency existed for prior art, it is proposed that a kind of reasonable in design, humorous Ripple filters efficiently, malfunction monitoring early warning is timely, protection device is complete has the active of malfunction monitoring function Wave filter.

The purpose of this utility model can be realized by following technical proposal:

There is the active filter of malfunction monitoring function, include source filter housing, be located at outside housing Current transformer and voltage transformer, it is characterised in that: it is provided with signal processing in active filter housing Circuit, fault monitor module, IGBT power conversion modules, FPGA controller, display module, relay Protection device and output reactance device；

Wherein, described signal processing circuit respectively with described current transformer, described voltage transformer, with And described fault monitor module all sets up connection；

And sequentially pass through described FPGA controller, described IGBT power conversion modules, described output reactance Device and described protective relaying device access the power circuit of load end；Described display module is with described FPGA controller connects.

Power module, singlechip controller and radio communication it is provided with inside described fault monitor module Module.

It is provided with fpga chip inside described FPGA controller.

This utility model has the beneficial effect that this has the active filter of malfunction monitoring function, if Meter is reasonable, and simple in construction is parallel in circuit be easy to actual application, filters load harmonic real-time and efficiently Electric current, it is possible to achieve the malfunction monitoring function of circuit, ensures the properly functioning of circuit and active filter.

Accompanying drawing explanation

Fig. 1 is this utility model: have the structural representation of the active filter of malfunction monitoring function；

Fig. 2 is this utility model: the structural representation of fault monitor module.

Detailed description of the invention

The following is specific embodiment of the utility model and combine accompanying drawing, to the technical solution of the utility model It is further described, but this utility model is not limited to these embodiments.

With reference to the active filter 1 with malfunction monitoring function shown in Fig. 1, include source filter housing 2, the current transformer 3 being located at outside housing 2 and voltage transformer 4, it is characterised in that: active power filtering Be provided with to process described current transformer 3 in device housing 2 and electric current that voltage transformer 4 obtains with And the signal processing circuit 5 of voltage signal, be concurrently out of order early warning and error protection in order to carrying out malfunction monitoring The fault monitor module 6 of order, in order to produce harmonic compensation current with load harmonic current opposite in phase IGBT power conversion modules 7, in order to analyze load harmonic composition and to described IGBT power conversion modules 7 FPGA controller 8 sending control instruction, in order to display harmonic filtration situation display module 9 in real time, In order to receive the error protection order of described fault monitor module 6 and to realize the relay guarantor of fault protection Protection unit 10 and in order to described IGBT power conversion modules 7 and protective relaying device 10 are carried out even The output reactance device 11 connect.

Wherein, described signal processing circuit 5 respectively with described current transformer 3, described voltage transformer 4, And all set up electrical connection between described fault monitor module 6；Sequentially pass through again described FPGA controller 8, Described IGBT power conversion modules 7, described output reactance device 11 and described protective relaying device 10 Access the power circuit of load end；Described display module 9 is connected with described FPGA controller 8.

With reference to the structural representation of fault monitor module 6 shown in Fig. 2, described fault monitor module 6 includes Power module 61, singlechip controller 62 and wireless communication module 63；Wherein, described power module 61 are connected 62 with described single-chip microcomputer, with thinking that described singlechip controller 62 provides power supply, described list Sheet machine controller 62 carries out fault in order to the electric current carrying described signal processing circuit 5 and voltage signal and divides Analysis, controls the action of described protective relaying device 10, controls described wireless communication module 63 simultaneously when fault Send fault pre-alarming information.

Of the present utility model ultimate principle and principal character and of the present utility model excellent have more than been shown and described Point.Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-mentioned Principle of the present utility model is simply described, without departing from this utility model described in embodiment and description On the premise of spirit and scope, this utility model also has various changes and modifications, these changes and improvements In the range of both falling within claimed this utility model.This utility model claims scope by appended power Profit claim and equivalent thereof define.

Claims

1. there is the active filter of malfunction monitoring function, include source filter housing, be located at described in have Current transformer outside source filter housing and voltage transformer, it is characterised in that: in described active filter Signal processing circuit, fault monitor module, IGBT power conversion modules, FPGA it is provided with in ripple device housing Controller, display module, protective relaying device and output reactance device；

Wherein, described signal processing circuit respectively with described current transformer, described voltage transformer, with And described fault monitor module sets up and connects.

The active filter with malfunction monitoring function the most according to claim 1, it is characterised in that: Power module, singlechip controller and wireless communication module it is provided with inside described fault monitor module.

The active filter with malfunction monitoring function the most according to claim 1, it is characterised in that: It is provided with fpga chip inside described FPGA controller.